Hi,
I've used a few painters over the past decade on my project bikes.
Dream Machine (Long Eaton) did 3 paint sets for me: not cheap but excellent work every time: that said Ive heard some mixed reports, but I would use again.
Paint Supremacy (Sleaford Lincs): absolute genius painter, never uses decals: downside is his work is expensive and usually very long lead times.
paintsupremacy.com/portfolio_paintsupremacy.html
Sean Dewis (Ilkeston - ex Dream Machine painter who went solo years ago): I know he does a lot of Kawaski work from feedback on other forums. Sean recently painted my Z900 and Z1000. and will soon be doing my H1 triple. He charges a lot less than Dream Machine but ive been well impressed with his work. See attached.
I can PM you Seans details if of interest.
Cheers Tim